Pain Clinical Trial
Official title:
Impact of 50% Nitrous Oxide Inhalation on Pain and Anxiety Induced by Lumbar Puncture: a Multicenter Double-blind Randomized Controlled Trial
Lumbar puncture (LP) is a frequent exam that can cause pain and anxiety. In a pilot single-center study, it has been shown that nitrous oxide use during the procedure was able to reduce both pain and anxiety (Moisset et al., Eur J Neurol 2017). The goal of this multi-center trial is to confirm these results in a larger and more heterogeneous group of patients having a LP.
Nitrous oxide (N2O) has analgesic and anxiolytic properties that are known for more than a
century. Nonetheless, it's use during lumbar puncture in adults has only been investigated in
a single-centre study.
Thus, this study is designed to evaluate the analgesic effect of N2O on the pain induced
during lumbar puncture.
Patients with scheduled lumbar puncture realized for diagnosis purposes will be randomized in
2 groups. One group will inhale N2O for the 5 minutes before the puncture and during the rest
of the procedure. The second group will inhale compressed air during the same period of time.
Neither the investigator realizing the lumbar puncture, nor the patient will know which type
of gaz they are inhaling (double-blinding).
The maximal pain level that occurred during the procedure will be evaluated on a Numerical
Rating Scale (NRS). NRS will also be used to evaluate the maximal anxiety induced by the
procedure.
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